悪さ could be an inflection of 悪い, with these forms:
- This is an i-adjective with the suffix -sa, which turns it into a noun.
Kanji — 1 found
Sentences — 13 found
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76900
- あの
- じょせい女性
- の
- おとこぐせ男癖
- の
- わる悪さ
- には
- あきれて物が言えない 。
The way that woman goes on with men shocks me. — Tatoeba